Mark Williams Promo Codes & Coupons November 2026 — Up to 20% Off

The 12th Mark Williams "The only rear end in drag racing that provides a gear set warranty is modular. That's how certain they are of the power of their posterior. There is no better way to achieve reliability and consistency for a racer than with a MW modular rear. It's simple to customize your car to your needs thanks to the modular architecture. You can choose the mounting style, as well as the center and wheel widths. Even switching from a flange axle to a floater is simple. The high-strength aerospace alloy used to make MW modular rears has proven to be much more stiff and precise than fabricated steel housings. Ford 9, 9-1/2, 10, or MW 12 gears are available at Mark Williams, however the latter are by far the strongest "gears.